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	Compare with Samsung Galaxy S21 Ultra 5G	Compare with Realme X9
Full Differences Change compare mode	Review Specs 128GB 12GB RAM $ 291.99	Specs

Samsung Galaxy S21 Ultra 5G

Realme X9

Network
Technology	GSM / CDMA / HSPA / EVDO / LTE / 5G	GSM / CDMA / HSPA / EVDO / LTE / 5G
2G bands	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Dual SIM model only)	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
	CDMA 800 / 1900 & TD-SCDMA	CDMA 800
3G Network	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
	CDMA2000 1xEV-DO	CDMA2000 1xEV-DO
4G Network	1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 - SM-G998U1	LTE
	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - SM-G998B
5G Network	2, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G998U1	SA/NSA
	1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6 - SM-G998B
Speed	HSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL)	HSPA, LTE, 5G

Launch
Announced	2021, January 14	Not announced yet
Status	Available. Released 2021, January 29	Cancelled

Body
Dimensions	165.1 x 75.6 x 8.9 mm (6.5 x 2.98 x 0.35 in)	-
Weight	227 g (Sub6), 229 g (mmWave) (8.01 oz)	-
Build	Glass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame
SIM	Nano-SIM and eSIM or Dual SIM (2 Nano-SIMs and eSIM, dual stand-by)	Dual SIM (Nano-SIM, dual stand-by)
	IP68 dust/water resistant (up to 1.5m for 30 min) Stylus support

Display
Type	Dynamic AMOLED 2X, 120Hz, HDR10+, 1500 nits (peak)	OLED, HDR10
Size	6.8 inches, 112.1 cm2 (~89.8% screen-to-body ratio)	6.4 inches, 98.9 cm2
Resolution	1440 x 3200 pixels, 20:9 ratio (~515 ppi density)	1080 x 2400 pixels, 20:9 ratio (~411 ppi density)
Protection	Corning Gorilla Glass Victus
	Always-on display

Platform
OS	Android 11, upgradable to Android 14, One UI 6.1	Android 11, Realme UI 2.0
Chipset	Exynos 2100 (5 nm) - International Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China
CPU	Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - USA/China
GPU	Mali-G78 MP14 - International Adreno 660 - USA/China

Memory
Card slot	No	No
Internal	128GB 12GB RAM, 256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM	128GB 8GB RAM, 256GB 12GB RAM
	UFS 3.1	UFS

Main Camera
Modules	108 MP, f/1.8, 24mm (wide), 1/1.33", 0.8µm, PDAF, Laser AF, OIS 10 MP, f/2.4, 72mm (telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 3x optical zoom 10 MP, f/4.9, 240mm (periscope telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 10x optical zoom 12 MP, f/2.2, 13mm (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF, Super Steady video	64 MP, (wide), PDAF 13 MP, (ultrawide) 2 MP, (depth)
Features	LED flash, auto-HDR, panorama	LED flash, HDR, panorama
Video	8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS	4K@30fps, 1080p@30/60/120fps, gyro-EIS

Selfie Camera
Modules	40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, PDAF	Unspecified
Features	Dual video call, Auto-HDR	Panorama
Video	4K@30/60fps, 1080p@30fps

Sound
Loudspeaker	Yes, with stereo speakers	Yes
3.5mm jack	No	Unspecified
	32-bit/384kHz audio Tuned by AKG	24-bit/192kHz audio

Comms
WLAN	Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct	Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Bluetooth	5.2, A2DP, LE	5.1, A2DP, LE
Positioning	GPS, GLONASS, BDS, GALILEO	GPS, GLONASS, GALILEO, BDS
NFC	Yes	Unspecified
Infrared port	No	No
Radio	FM radio (Snapdragon model only; market/operator dependent)	No
USB	USB Type-C 3.2, OTG	USB Type-C 2.0, OTG

Features
Sensors	Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer	Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
	Samsung DeX, Samsung Wireless DeX (desktop experience support) Ultra Wideband (UWB) support

Battery
Type	Li-Ion 5000 mAh, non-removable	4500 mAh, non-removable
Charging	25W wired, PD3.0 15W wireless (Qi/PMA) 4.5W reverse wireless	65W wired

Misc
Colors	Phantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown, Navy	Black; other colors
SAR	0.77 W/kg (head)     1.02 W/kg (body)
SAR EU	0.71 W/kg (head)     1.58 W/kg (body)
Models	SM-G998B, SM-G998B/DS, SM-G998U, SM-G998U1, SM-G998W, SM-G998N, SM-G9980
Price	$ 291.99 / C$ 468.97 / £ 279.00 / € 405.00

Tests
Performance	AnTuTu: 657150 (v8) GeekBench: 3518 (v5.1) GFXBench: 33fps (ES 3.1 onscreen)
Display	Contrast ratio: Infinite (nominal)
Loudspeaker	-25.5 LUFS (Very good)
Battery (old)	Endurance rating 114h